CN115520857B

CN115520857B - Graphene scale production system

Info

Publication number: CN115520857B
Application number: CN202211238965.5A
Authority: CN
Inventors: 万红伟; 张文琪; 万俊俊; 万佳琪
Original assignee: Changsha Wanrong Milling Equipment Co ltd
Current assignee: Changsha Wanrong Milling Equipment Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2024-03-26
Anticipated expiration: 2042-10-11
Also published as: CN115520857A

Abstract

The invention discloses a large-scale graphene production system which comprises a storage bin, a conveying device, a proportioning barrel, a first grinding machine, a first cooling pool, a frequency bursting device, a second grinding machine and a second cooling pool which are sequentially communicated, wherein the storage bin is used for containing graphite, and an arch breaking device is arranged in the storage bin; the batching bucket is provided with a first water inlet, and the first water inlet is used for injecting water into the batching bucket. The graphene scale production system provided by the invention has the advantages that the obtained graphene is high in purity and yield, and the industrial production requirement can be met.

Description

Graphene scale production system

Technical Field

The invention relates to the technical field of nano material production, in particular to a large-scale graphene production system.

Background

Graphene (Graphene) is a kind of Graphene which is formed by sp ² New materials with hybridized linked carbon atoms closely packed into a monolayer two-dimensional honeycomb lattice structure. The graphene has excellent optical, electrical and mechanical properties, and has important application prospects in the aspects of material science, micro-nano processing, energy, biomedicine, drug delivery and the like.

Graphene exists in nature, and is only difficult to peel off a single-layer structure. Graphene layers are stacked to form graphite, and a 1 mm thick graphite contains approximately 300 ten thousand layers of graphene. The graphene is in a two-dimensional hexagonal grid shape, has good strength, namely strong fracture resistance, is easy to extend without fracture, and is very fragile when subjected to shearing force because the graphene is not in a three-dimensional grid structure. A common production method for graphene is a mechanical exfoliation method. The graphene obtained by the mechanical stripping method has a small area, cannot be prepared in a large scale, and cannot meet the requirements of industrial production.

Disclosure of Invention

In view of the above, the invention provides a graphene large-scale production system, and the obtained graphene has high purity and high yield and can meet the requirements of industrial production.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the large-scale graphene production system comprises a storage bin, a conveying device, a batching barrel, a first grinding machine, a first cooling pool, a frequency bursting device, a second grinding machine and a second cooling pool which are sequentially communicated, wherein the storage bin is used for containing graphite, and an arch breaking device is arranged in the storage bin; the batching bucket is provided with a first water inlet, and the first water inlet is used for injecting water into the batching bucket.

Optionally, a buffer barrel is arranged between the batching barrel and the first layer grinding machine, a feed inlet of the buffer barrel is communicated with a discharge outlet of the batching barrel, and a discharge outlet of the buffer barrel is communicated with a feed inlet of the first layer grinding machine.

Optionally, the frequency bursting device comprises a first frequency bursting device and a second frequency bursting device which are sequentially communicated, wherein a feed inlet of the first frequency bursting device is communicated with a liquid outlet of the first cooling tank, and a liquid outlet of the second frequency bursting device is communicated with the second grinding machine.

Optionally, the conveying device comprises a first screw conveyor and a second screw conveyor which are sequentially arranged, wherein the inlet end of the first screw conveyor is connected with the discharge port of the stock bin, the outlet end of the first screw conveyor is communicated with the inlet end of the second screw conveyor, and the outlet end of the second screw conveyor is communicated with the inlet end of the batching barrel;

the first screw conveyor is a shaft screw conveyor, and the second screw conveyor is a weighing screw conveyor.

Optionally, the batching bucket comprises a first bucket body and a first bucket cover covered on the first bucket body, a first stirring blade is arranged in an inner cavity of the first bucket body and connected to a first stirring rod, the first stirring rod is connected with a power output end of a first motor, and the first motor is connected to the first bucket cover;

the inner wall of the first barrel body is provided with a first spoiler, and the first spoiler is fixedly connected to the first barrel body.

Optionally, the buffer barrel comprises a second barrel body and a second barrel cover covered on the second barrel body, a second stirring blade is arranged in an inner cavity of the second barrel body and connected to a second stirring rod, the second stirring rod is connected with a power output end of a second motor, and the second motor is connected to the second barrel cover;

the inner side wall of the second barrel body is provided with a second spoiler which is fixedly connected to the second barrel body.

Optionally, the first layer grinding machine and the second layer grinding machine all include the casing, be provided with stator and rotor in the casing, stator fixed connection is in on the inside wall of casing, the top of casing is provided with the cap, rotate on the cap and be connected with rotatory main shaft, fixedly connected with rotor on the rotatory main shaft.

Optionally, the stator is provided with a sawtooth structure and a groove, the sawtooth structure and the groove are both arranged on the side surface of the stator, which is close to the rotor, and the sawtooth structure and the groove are arranged at intervals along the axial direction of the shell; the gap between the rotor and the stator is 1-2 mm.

Optionally, the frequency blaster comprises a sealed tank body, a main vibrating rod is arranged in the tank body, and auxiliary frequency blasters are arranged around the main vibrating rod.

Optionally, a discharge port at the bottom end of the second cooling tank is connected with a dehydrator, and the dehydrator is used for dehydrating the obtained graphene to obtain a graphene product. The upper end of the dehydrator is provided with a pipeline communicated with the cooling tank.

Optionally, the arch breaking device comprises a stirring supporting rod arranged in the storage bin, the stirring supporting rod is connected to a stirring main shaft, and the stirring main shaft is connected with a power output end of a fourth motor.

Optionally, a vibrator is provided on the outer surface of the silo.

According to the technical scheme, the graphene mass production system provided by the invention has the advantages that the bin, the conveying device, the batching barrel, the first grinding machine, the first cooling pool, the frequency bursting device, the second grinding machine and the second cooling pool which are sequentially communicated are arranged, the graphite particles are placed in the bin, the finished graphene can be obtained at the second cooling pool, only water is needed to be injected in the whole production process, the graphene is peeled off from the graphite particles by utilizing the impact force and friction force of the water, the dispersing agent or the catalyst with other chemical components is not needed, the obtained graphene has high purity and large area, the mass production of the graphene is realized, and the yield of the graphene is large, so that the requirement of industrial production can be met.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a graphene mass production system according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a graphene mass production system according to another embodiment of the present disclosure;

fig. 3 is a schematic structural view of a dosing barrel according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a first barrel according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a first spoiler according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a spoiler according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a spoiler according to another embodiment of the present invention;

FIG. 8 is a schematic diagram of a buffer bucket according to an embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view of a first grinder according to an embodiment of the present invention;

fig. 10 is an enlarged schematic view of a portion a in fig. 9;

FIG. 11 is a schematic top view of a first polishing machine according to an embodiment of the present invention;

fig. 12 is an enlarged schematic view of the portion B in fig. 11;

fig. 13 is a schematic structural diagram of a first frequency bursting device according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a tee structure according to an embodiment of the present invention;

FIG. 15 is a schematic structural view of a tank according to an embodiment of the present invention;

fig. 16 is a schematic structural view of a lower tank according to an embodiment of the present invention;

fig. 17 is a schematic structural diagram of a silo according to an embodiment of the invention.

Wherein:

1. bin, 101, fourth motor, 102, stirring spindle, 103, stirring rod, 104, bin housing, 105, vibrator, 2, first screw conveyor, 3, second screw conveyor, 4, dosing bin, 401, first tub, 402, first tub cover, 403, first motor, 404, first stirring rod, 405, first spoiler, 4051, spoiler riser, 4052, spoiler connecting plate, 40521, connecting gap, 40522, arced face, 406, first discharge port, 407, first discharge port, 408, first stirring vane, 5, first feed pump, 6, first grinder, 601, housing, 602, cap, 603, third motor, 604, rotating spindle, 605, rotor, 606, third discharge port, 607, third feed port, 608, stator, 6081, zigzag structure, 6082, a groove, 609, a rotor fixing plate, 7, a fourth feeding pump, 8, a first cooling tank, 9, a first frequency explosion device, 901, a tank body, 902, a frequency explosion rod, 903, an auxiliary frequency explosion rod, 904, a lower tank body, 905, a fourth feeding port, 906, a fourth discharging port, 907, a three-way structure, 908, a vibrating motor, 10, a third feeding pump, 11, a second grinding machine, 12, a fifth feeding pump, 13, a second cooling tank, 14, a dehydrator, 15, a buffer barrel, 1501, a second barrel body, 1502, a second barrel cover, 1503, a second motor, 1504, a second stirring rod, 1505, a second spoiler, 1506, a second discharging port, 1507, a second discharging port, 1508, a second stirring blade, 16, a second feeding pump, 17 and a second frequency explosion device.

Detailed Description

The invention discloses a large-scale graphene production system, which has high purity and high yield of the obtained graphene and can meet the requirements of industrial production.

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 and 2, the graphene mass production system comprises a storage bin 1, a conveying device, a batching barrel 4, a first grinding machine 6, a first cooling pool 8, a frequency bursting device, a second grinding machine 11 and a second cooling pool 13 which are sequentially communicated, wherein the storage bin 1 is used for containing graphite, and an arch breaking device is arranged in the storage bin 1. The batching bucket 4 is provided with a first water inlet which is used for injecting water into the batching bucket 4.

Wherein, broken device that encircles is used for avoiding the bed of material to form the arched bridge state in feed bin 1 for graphite granule in the feed bin 1 flows into smoothly in the conveyor, avoided graphite granule to collapse the impact that the material formed to conveyor inner chamber part's influence, also prevented that graphite granule from impacting and forming the raise dust, avoided pollution and the waste of graphite granule that the raise dust caused. The first water inlet is arranged on the batching bucket 4, so that water is conveniently conveyed into the batching bucket 4. The controller controls the amount of water that the first water inlet enters the dosing barrel 4 according to the amount of graphite particles that enter the dosing barrel 4, thereby forming a graphite solution in the dosing barrel 4. The graphite flake is rubbed and peeled by the force of flowing water in the first and second laminators 6 and 11. The frequency bursting device peels graphene from graphite particles by utilizing impact force generated by crushing microwave bubbles. The first cooling tank 8 is used to reduce the temperature of the slurry exiting the first refiner 6. The second cooling tank 13 is used to reduce the temperature of the slurry exiting the second refiner 11.

According to the graphene scale production system, the bin 1, the conveying device, the batching barrel 4, the first grinding machine 6, the first cooling pool 8, the frequency bursting device, the second grinding machine 11 and the second cooling pool 13 are sequentially communicated, graphite particles are placed in the bin 1, finished graphene can be obtained at the second cooling pool 13, water is only required to be injected in the whole production process, the graphene is peeled off from the graphite particles by utilizing the impact force and friction force of the water, dispersing agents or catalysts with other chemical components are not required, the obtained graphene is high in purity and large in area, the scale production of the graphene is realized, the yield of the graphene is large, and the requirement of industrial production can be met.

Wherein, be provided with buffer tank 15 between batching bucket 4 and the first layer mill 6, the feed inlet of buffer tank 15 communicates with the discharge gate of batching bucket 4, the discharge gate of buffer tank 15 communicates with the feed inlet of first layer mill 6. It will be appreciated that in order to facilitate the mixed solution of the mixed water and the graphite particles in the dosing barrel 4 to enter the buffer barrel 15, a first feed pump 5 is provided on the communication pipe between the dosing barrel 4 and the buffer barrel 15. A second feeding pump 16 is arranged on a communication pipeline between the buffer barrel 15 and the first layering machine 6, and the second feeding pump 16 pumps the mixed liquid in the buffer barrel 15 into the first layering machine 6.

In an embodiment, the frequency blaster comprises a first frequency blaster 9 and a second frequency blaster 17 which are sequentially communicated, the first frequency blaster 9 is communicated with a liquid outlet of the first cooling tank 8, and a third feeding pump 10 is arranged on a communicating pipeline of the first frequency blaster 9 and the second frequency blaster. The liquid outlet of the second frequency explosion device 17 is communicated with the second layer grinding machine 11.

In order to control the amount of feed while the silo 1 is feeding, the conveying means comprises a first screw conveyor 2 and a second screw conveyor 3 arranged in sequence. The inlet end of the first screw conveyor 2 is connected with the discharge port of the feed bin 1, the outlet end of the first screw conveyor 2 is communicated with the inlet end of the second screw conveyor 3, and the outlet end of the second screw conveyor 3 is communicated with the inlet end of the batching bucket 4. The first screw conveyor 2 is a shaft screw conveyor commonly used in the prior art, and the second screw conveyor 3 is a weighing screw conveyor in the prior art. The weighing screw conveyor transmits the passed graphite weight to the central PLC host computer for calculation in real time, the host computer opens a water supply valve on a batching barrel in real time according to the data of the weighing screw conveyor, and the metered graphite powder and water are simultaneously conveyed into the batching barrel 4 according to the set solid-to-liquid ratio, and the graphite solution is formed by stirring in the batching barrel 4.

Specifically, as shown in fig. 3, the batching bucket 4 includes a first bucket body 401 and a first bucket cover 402 covered on the first bucket body 401, a first stirring blade 408 is disposed in an inner cavity of the first bucket body 401, the first stirring blade 408 is connected to the first stirring rod 404, and the first stirring rod 404 is connected to a power output end of the first motor 403. The first motor 403 is connected to the first tub cover 402. When the graphite solution stirring device works, the first motor 403 is started, the first motor 403 drives the first stirring rod 404 to rotate, and when the first stirring blade 408 is driven by the first stirring rod 404 to rotate, the first stirring blade 408 drives water in the material mixing barrel 4 to form a vortex, so that the graphite solution which is uniformly stirred is obtained. The lower part of first staving 401 is provided with first discharge gate 406, and first discharge gate 406 is the discharge gate of batching bucket 4, and the upper portion of first staving 401 is provided with first feed inlet, can understand, first feed inlet is the feed inlet of batching bucket 4 promptly. The bottom of the first barrel 401 is provided with a first discharge opening 407, and the first discharge opening 407 is used for discharging waste liquid when cleaning or cleaning the dosing barrel 4.

In order to facilitate uniform mixing of the graphite solution, as shown in fig. 3 to 7, a first spoiler 405 is disposed on an inner wall of the first barrel 401, and the first spoiler 405 is fixedly connected to the first barrel 401. Specifically, as shown in fig. 4, the first spoiler 405 includes a spoiler riser 4051 and a spoiler connecting plate 4052 that are connected together, one side of the spoiler connecting plate 4052 is connected to the inner wall of the first tub 401, and the other side is connected to the spoiler riser 4051. When the liquid is stirred in the batching bucket 4, the liquid is in a state of low middle and high periphery, and the first spoiler 405 is arranged to be favorable for preventing the liquid from overflowing, and meanwhile, the water flow direction can be increased, so that more uniform graphite solution can be obtained.

Further, a connection opening 40521 is provided on the plate body of the spoiler 4052. After the spoiler riser 4051 is inserted into the connection opening 40521, the spoiler connecting plate 4052 is welded to the spoiler riser 4051 as shown in fig. 6 and 7. In an embodiment, the spoiler 4052 is configured to be connected to the curved surface 40522 on the inner wall of the first barrel 401, as shown in fig. 7. The turbulence plate 4051 is spaced a distance from the inside of the first tub 401 to facilitate passage of large powder particles to reduce wear on the turbulence plate 4051.

The buffer tank 15 includes a second tank 1501 and a second barrel cover 1502 covering the second tank 1501, as shown in fig. 8, a second stirring blade 1508 is disposed in an inner cavity of the second tank 1501, the second stirring blade 1508 is connected to the second stirring rod 1504, the second stirring rod 1504 is connected to a power output end of the second motor 1503, and the second motor 1503 is connected to the second barrel cover 1502. The agitation by the second agitating blade 1508 causes the graphite solution entering the buffer tank 15 to mix more uniformly. The second stirring blade 1508 is a propeller blade.

Further, a second spoiler 1505 is disposed on the inner sidewall of the second tub 1501, and the second spoiler 1505 is fixedly connected to the second tub 1501. The propeller blades are arranged in the buffer barrel 15, the second spoiler 1505 is arranged on the barrel wall, and after the slurry vortex brought up by the rotation of the second stirring blade 1508 hits the second spoiler 1505, the slurry flows to form refraction and collision, so that more uniform graphite solution is obtained. The bottom of the second tub 1501 is provided with a second discharge port 1507, and the second discharge port 1507 is used to discharge waste liquid when the buffer tub 15 is washed or cleaned. The lower part of second staving 1501 is provided with second discharge gate 1506, and second discharge gate 1506 is the discharge gate of buffer tank 15, and the upper portion of second staving 1501 is provided with the second feed inlet, and it can be understood that the second feed inlet is the feed inlet of buffer tank 15 promptly. The specific structure of the buffer tub 15 is the same as that of the dosing tub 4, and will not be described again here.

In order to ensure smooth feeding of the production system, a fourth feeding pump 7 is arranged on a communicating pipeline between the first grinding machine 6 and the first cooling tank 8. A fifth feed pump 12 is arranged on the communicating pipe of the second grinding machine 11 and the second cooling tank 13.

In one embodiment, as shown in fig. 9 to 12, the first laminating machine 6 includes a housing 601, a stator 608 and a rotor 605 are disposed in the housing 601, the stator 608 is fixedly connected to an inner sidewall of the housing 601, the rotor 605 is connected to an edge position of a rotor fixing plate 609, and a center position of the rotor fixing plate 609 is fixedly connected to a rotating main shaft 604. The housing 601 has a housing structure with a bottom sealed and an open top. A shell cover 602 is arranged at the top end of the shell 601, and a rotary spindle 604 is rotatably connected to the shell cover 602. A third motor 603 is fixedly connected to the top surface of the housing cover 602. When the third motor 603 operates, the rotating main shaft 604 is driven to rotate, and the rotor 605 connected to the rotating main shaft 604 is driven to rotate. A third discharge port 606 is formed in the side wall, close to the top end, of the shell 601, and a third feed port 607 is formed in the side wall, close to the bottom end, of the shell 601. The second laminating machine 11 has the same structure as the first laminating machine 6, and a detailed description of the structure of the second laminating machine 11 is omitted here.

Further, a sawtooth structure 6081 and a groove 6082 are provided on the stator 608, the sawtooth structure 6081 is horizontally and annularly provided along the inner surface of the stator 608, a plurality of circles of sawtooth structures 6081 are provided on the inner surface of the stator 608, and a groove 6082 is provided between two adjacent circles of sawtooth structures 6081, that is, the sawtooth structures 6081 and the groove 6082 are arranged at intervals along the axial direction of the housing 601, as shown in fig. 10. In one embodiment, the gap between the edge of the rotor 605 and the top end of the sawtooth structure 6081 of the stator 608 is 1.5 mm, and in other embodiments, the gap between the edge of the rotor 605 and the top end of the sawtooth structure 6081 of the stator 608 may be other values, which is specifically set by a person skilled in the art according to actual needs, and can be achieved by adjusting the installation position of the rotor 605. The inner wall of the stator 608 is provided with a sawtooth structure 6081 which is suitable for the graphite cutting in the inner part of the stator by the grinding machine. The sufficiently and uniformly dispersed graphite solution is pumped into the bottom of the layering machine, the third motor 603 drives the rotating main shaft 604 to rotate, the rotor 605 is mounted on the rotating main shaft 604, the rotor 605 is of a plate-shaped structure, and the plate surface of the plate-shaped structure is perpendicular to the bottom surface of the shell 601. The plate surface of the rotor fixing plate 609 is disposed parallel to the bottom surface of the housing 601.

After the graphite solution is pumped to the bottom of the first grinding machine 6, the rotor 605 runs at a linear speed of 200 m/s, and the graphite is in a flake-shaped structure, so that the graphite flakes are easily spread in tooth grooves of the sawtooth structure on the stator 608 by strong water flow, the graphite stays in the tooth grooves and is in a static state, the rotor 605 rotates at a high speed and is in a moving state, and the graphite in the tooth grooves is rubbed layer by the high-speed movement of the rotor 605. In the process of flushing, extruding, shearing, rubbing, rolling and rubbing strong water flow, the number of graphite layers is reduced, meanwhile, the sheet diameter of graphite particles is broken, the graphite particles are thinned and reduced, the air and oxygen content in water is increased by high-speed rotation disturbance slurry, and graphite materials are subjected to comprehensive effects of strong mechanical and hydraulic shearing, high-speed impact stripping, centrifugal extrusion force, liquid layer friction, cavitation and the like, so that crystal face horizontal dislocation and sliding movement are generated between the graphite layers, and the graphite is further stripped rapidly. The residence time of the graphite and the variation in particle size and number of layers of the grind can be controlled by the pump flow rate.

The graphite slurry in the first grinding machine 6 adopts a mode of feeding downwards and discharging upwards, along with the thinning of a graphite layer, gravity is reduced, flaky graphite slowly floats upwards along with the water flow direction, thick graphene always moves at the bottom of the first grinding machine 6, and the graphite slurry can be taken out of a grinding cavity of the first grinding machine 6 until the layer number is thinned. Through set up a plurality of rings of sawtooth structures 6081 along the axis direction at the internal surface of stator 608 of first mill 6 inner chamber, be used for blockking graphite thick liquids and rise to the top from the bottom directly, avoided the graphite granule of escape, the flow field of thick liquids that rotor 605 drove is in the spiral state all the time to guarantee that thick liquids are according to the time operation of stipulation in the route inside, then guarantee the uniformity and the homogeneity of device course of working. The particle size of the graphite solution after exiting the first refiner 6 is reduced, and the slurry and friction moving at high speed generate a lot of heat, so that the slurry needs to enter a first cooling tank 8 for cooling, and the cooled slurry is pumped to the bottom of the frequency bursting device.

It will be appreciated that the second laminator 11 operates in the same manner as the first laminator 6, the difference being that the second laminator 11 is disposed downstream of the frequency blaster and the first laminator 6 is disposed upstream of the frequency blaster. The graphite solution after the second grinder 11 is fed into the second cooling tank 13 for cooling.

As shown in fig. 13 to 16, the first frequency blaster 9 includes a tank 901, a frequency blaster 902 is disposed in the tank 901, and an auxiliary frequency blaster 903 is disposed around the frequency blaster 902. The tank 901 is a shell structure with openings at the top and bottom. The bottom opening of the tank 901 is connected with the lower tank 904 in a sealing way through a first flange, and the top opening of the tank 901 is connected with one opening of the three-way structure 907 in a sealing way through a second flange. A fourth outlet 906 is provided on one side of the tee structure 907. A fourth feed port 905 is provided at the bottom end of the lower tank 904. The first frequency explosion device 9 discharges materials from the upper part and feeds the materials from the lower part, so that the materials can stay in the frequency explosion device for enough time, the materials can be fully crushed, refined and dispersed, and the scattering effect is ensured.

The explosion frequency rod 902 is inserted into the inner cavity of the tank body 901, the explosion frequency rod 902 is connected with a vibration motor 908, the vibration motor 908 enables the explosion frequency rod 902 to vibrate at the frequency of 20 HZ/second, so that air in graphite slurry in the tank body 901 of the first explosion frequency device 9 is excited to form microwave bubbles, the diameter of the microwave bubbles is between a few nanometers, the microwave bubbles can drill into the middle of the interlayer spacing of graphite, and the microwave bubbles are transmitted to the graphite slurry in a high-frequency conversion mode of the interactivity of compression force and decompression force of more than ten thousand times per second under the high-strength vibration action of the explosion frequency rod 902. When the pressure is reduced, the vacuum nucleus bubble is generated in the liquid, and when the pressure is reduced, the vacuum nucleus bubble generates strong impact force, so that graphene is peeled off from graphite particles one by one or a plurality of units, and the required graphene is generated. The auxiliary squib 903 resonates by waves generated by the vibration of the squib 902.

Wherein the diameter of the squib 902 is one sixth of the diameter of the can 901. Six auxiliary explosion frequency rods 903 are arranged, the six auxiliary explosion frequency rods 903 are arranged around the explosion frequency rod 902 in a surrounding mode, and the auxiliary explosion frequency rods 903 are arranged on the tank 901. When the bursting frequency rod 902 vibrates, the generated wave resonates with the auxiliary bursting frequency rod 903 to excite the air in the graphite slurry to form high-strength microwave bubbles, the diameter of the microwave bubbles is between a few nanometers, the microwave bubbles can drill into the interlayer space of the graphite, and the microwave bubbles transmit to the graphene slurry in a high-frequency conversion mode of compression force and decompression force interactivity of more than ten thousand times per second under the high-strength vibration action of the bursting frequency rod 902. The phenomenon of vacuum nuclear group bubbles is generated in the liquid under the action of pressure reducing force, and the vacuum nuclear group bubbles generate strong impact force when being crushed by pressure under the action of compression force, so that graphene is peeled off from graphite particles one by one or a plurality of sheets.

The pop frequency bar 902 can be provided with a plurality of or a plurality of groups for single-layer graphene peeling according to the energy production. The types of the bursting rod 902 and the auxiliary bursting rod 903 are JY-Y202G. The second frequency blaster 17 has the same structure and working principle as the first frequency blaster 9, and will not be described here again.

In order to obtain the graphene product with water removed, a discharge port at the bottom end of the second cooling tank 13 is connected with a dehydrator 14, and the dehydrator 14 is used for dehydrating the obtained graphene to obtain the graphene product. The waste water dehydrated by the dehydrator 14 flows into the batching bucket 4 through a pipeline, the waste water is recycled, the environmental pollution is avoided, the dehydrator 14 is a filter press, and the filter press is a vertical plate-and-frame filter press, and the model is 1000.

Wherein the cartridge 1 comprises a cartridge housing 104. The arch breaking device comprises a stirring support rod 103 arranged in a bin shell 104, the stirring support rod 103 is connected to a stirring main shaft 102, and the stirring main shaft 102 is connected with the power output end of a fourth motor 101. Stirring branch 103 fixed connection is on stirring main shaft 102, and stirring branch 103 is perpendicular or the slope setting with stirring main shaft 102, and stirring branch 103 is provided with a plurality of, and a plurality of stirring branches 103 equipartition are around stirring main shaft 102, as shown in fig. 17. The bottom of the surface of feed bin casing 104 is provided with vibrator 105, and the vibration end and the feed bin casing 104 of vibrator 105 are connected, drive feed bin casing 104 vibration, avoid the graphite powder in the feed bin 1 to block up, guarantee smooth feeding. Vibrator 105 is a purchasing piece, the specific model being selected by one skilled in the art depending on the size of silo 1.

The arch breaking device and the vibrator 105 are arranged on the storage bin 1, so that the graphite in the storage bin 1 is prevented from forming an arch bridge state of a material layer after the bottom is discharged due to the action of static electricity, the phenomenon that the material layer arch bridge is suddenly collapsed to impact the first screw conveyor 2 under the action of a certain gravity is avoided, and the pollution caused by that the graphite collapsed material is flushed out from a gap of the first screw conveyor 2 and drifts in the air is avoided.

According to the graphene scale production system, after the slurry is continuously burst and torn off through the first burst frequency device 9 and the second burst frequency device 17, the graphene slurry forms pollution-free nano multi-layer graphite particles without chemical dispersing agents, graphene sheets are clustered together under the electrostatic agglomeration effect of graphite, and then the graphene sheets enter the second grinding machine 11 to be dispersed to form nano graphite particles with the sheet diameter smaller than 500 nanometers and smaller than 10 layers.

In the description of the present embodiment, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present embodiment, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The large-scale graphene production system is characterized by comprising a storage bin, a conveying device, a proportioning barrel, a first grinding machine, a first cooling pool, a frequency bursting device, a second grinding machine and a second cooling pool which are sequentially communicated, wherein the storage bin is used for containing graphite, and an arch breaking device is arranged in the storage bin; the first water inlet is arranged on the batching barrel and is used for injecting water into the batching barrel;

the batching bucket comprises a first bucket body and a first bucket cover which is covered on the first bucket body, a first spoiler is arranged on the inner wall of the first bucket body, and the first spoiler is fixedly connected to the first bucket body;

the first spoiler comprises a spoiler vertical plate and a spoiler connecting plate which are connected together, one side of the spoiler connecting plate is connected with the inner wall of the first barrel body, the other side of the spoiler connecting plate is connected with the spoiler vertical plate through a connecting opening, and the spoiler vertical plate is separated from the inner wall of the first barrel body by a certain distance;

the first laminating machine and the second laminating machine comprise a shell, a stator and a rotor are arranged in the shell, the stator is fixedly connected to the inner side wall of the shell, a shell cover is arranged at the top end of the shell, a rotary main shaft is rotatably connected to the shell cover, and the rotor is fixedly connected to the rotary main shaft;

the stator is provided with a sawtooth structure and a groove, the sawtooth structure and the groove are arranged on the side surface of the stator, which is close to the rotor, and the sawtooth structure and the groove are arranged at intervals along the axial direction of the shell;

the gap between the rotor and the stator is 1-2 mm.

2. The graphene mass production system according to claim 1, wherein a buffer barrel is arranged between the batching barrel and the first layering machine, a feed inlet of the buffer barrel is communicated with a discharge outlet of the batching barrel, and a discharge outlet of the buffer barrel is communicated with a feed inlet of the first layering machine.

3. The graphene mass production system according to claim 1, wherein the frequency blaster comprises a first frequency blaster and a second frequency blaster which are sequentially communicated, a feed inlet of the first frequency blaster is communicated with a liquid outlet of the first cooling tank, and a liquid outlet of the second frequency blaster is communicated with the second grinding machine.

4. The graphene mass production system according to claim 1, wherein the conveying device comprises a first screw conveyor and a second screw conveyor which are sequentially arranged, an inlet end of the first screw conveyor is connected with a discharge port of the storage bin, an outlet end of the first screw conveyor is communicated with an inlet end of the second screw conveyor, and an outlet end of the second screw conveyor is communicated with an inlet end of the batching barrel;

5. The graphene mass production system according to claim 1, wherein the inner cavity of the first barrel is provided with a first stirring blade, the first stirring blade is connected to a first stirring rod, the first stirring rod is connected to a power output end of a first motor, and the first motor is connected to the first barrel cover.

6. The graphene mass production system according to claim 2, wherein the buffer barrel comprises a second barrel body and a second barrel cover which is covered on the second barrel body, a second stirring blade is arranged in an inner cavity of the second barrel body and is connected to a second stirring rod, the second stirring rod is connected with a power output end of a second motor, and the second motor is connected to the second barrel cover;

7. The graphene mass production system of claim 1, wherein the frequency blaster comprises a sealed tank body, a main vibrating rod is arranged in the tank body, and auxiliary frequency blasters are arranged around the main vibrating rod.

8. The graphene mass production system according to claim 1, wherein a discharge port at the bottom end of the second cooling tank is connected to a dehydrator, and the dehydrator is used for dehydrating the obtained graphene to obtain a graphene product.

9. The graphene mass production system of claim 1, wherein the arch breaking device comprises a stirring strut arranged in the bin, the stirring strut is connected to a stirring main shaft, and the stirring main shaft is connected to a power output end of a fourth motor.

10. The graphene mass production system of claim 1, wherein an outer surface of the silo is provided with a vibrator.